JP2008057904A - Refrigerator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a refrigerator comprising a freezing compartment capable of storing frozen food in a state of keeping moisture by humidification (preventing drying), and freezing food in a short time. <P>SOLUTION: This refrigerator-freezer comprising a first freezing compartment, a second freezing compartment, an ice making compartment defined in the width direction of the second freezing compartment, an ice making case disposed in the ice making compartment, a case for the second freezing compartment disposed in the second freezing compartment, and a cold air forced-circulation fan for distributing the cold air into the ice making case and the second freezing compartment, further comprises a cover body for covering the whole face of a top face opening of the case for the second freezing compartment, and a heat resistor disposed on a face kept into contact with the frozen food of the case for the second freezing compartment to improve heat insulating properties. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a refrigerator provided with a freezing room that reduces drying of frozen foods.

  In a commercially available refrigerator, store the refrigerated food, vegetables, or fruit in a container so that it does not directly apply cold air, cool the container from the outer periphery, and cool the stored food without direct contact with the cold air. Indirect cooling refrigerators that prevent moisture transpiration from vegetables have been proposed.

  JP, 2003-42632, A is mentioned as an example of such a refrigerator which prevents moisture evaporation from vegetables etc. This relates to a refrigerator that is less affected by the cold air temperature outside the case and suppresses the transpiration of water by suppressing temperature fluctuations in the food storage case. As a means for this, the food storage case is doubled, and a lid is provided on the upper surface opening of the food storage case so as to make it difficult to be affected by the cold air temperature.

  In recent years, refrigerators have also been proposed that prevent frozen foods from drying due to the fact that cold air comes into direct contact with the frozen surface and moisture sublimates, and this continues for a long time. Yes. It is intended to maintain the umami of frozen foods by suppressing the moisture content of the frozen foods.

  Hereinafter, JP, 2006-64190, A is mentioned as a conventional example of a refrigerator which controls that moisture of frozen food decreases.

  That is, in order to prevent the cool air blown from the upper surface opening of the storage container installed facing the cold air outlet from directly hitting a storage member such as a bag containing food, half of the depth dimension of the upper surface opening. Or the cover body which covers all is provided. As a result, the blown cool air hits the lid and is blocked, and circulates through the upper surface of the storage container. As a result, the momentum of the cold air that comes into contact with the frozen food storage member is greatly weakened, the frozen food and the storage member are cooled so that the temperature difference does not increase, and the frozen water of the frozen food is sublimated to be preserved. Suppresses adhesion to the inner surface of the surface.

  In addition, when the frozen food is dried, if the temperature of the storage member such as a bag becomes higher than the temperature of the frozen food after defrosting by melting the frost attached to the cooler with a defrost heater, The attached frost sublimates and attaches to the surface of the frozen food. If the temperature of the storage member falls below the temperature of the frozen food again due to the blowing of cold air, the frozen food is due to the presence of the lid. The temperature difference between the storage member and the storage member is not increased, the frost attached to the surface of the frozen food is not completely moved to the inner surface of the storage member, and the sublimation of moisture from the frozen food is suppressed.

Further, the temperature of the storage member after the start of the cooling operation can be reduced by suppressing the intrusion of warm air into the storage container during the defrosting operation by the lid and reducing the temperature rise of the frozen food during the defrosting operation. It is described that the temperature difference from the frozen food can be reduced even if the water content drastically decreases, and thus the sublimation of moisture from the frozen food is suppressed.
If the cover is covered with a lid plate in order to prevent moisture from sublimation and increase the cooling rate so that the air is not directly applied to the storage member such as the bag, the material is made of metal. It is characterized by always actively cooling food contained in the container.

JP 2003-42632 A JP 2006-64190 A

  The above prior art is a storage container that is hermetically sealed with a lid, and has a structure that cools the frozen food storage member so that it is not directly applied to the frozen food storage member. It was unsuitable.

  That is, there is a several-fold difference between the case where the cold air directly hits the food (storage member) and the case where the air does not hit the food (storage member) when compared with the time required to cool the food to −18 ° C. to 20 ° C. suitable for frozen storage. End up. Therefore, the container with a lid of the above prior art is excellent in suppressing moisture sublimation in the preservation of frozen food, but in addition to suppressing moisture sublimation in food, it is cooled in a short time to be frozen (rapid It cannot be frozen.

  Furthermore, the freezer compartment is cooled by cold air that has been cooled through a cooler, but the position of the outlet of this cold air has many structural limitations and is in a limited position. From the relationship between the positions of the air outlets, in the above prior art, the upper rear portion of the storage container is cooled to a lower temperature than the other parts, and the moisture in the cool air in the container is cooled by the temperature difference from the cool air in the container. It adheres as frost on the part. Since the moisture in the air frosts and adheres to the low temperature part of the container, the moisture from the frozen food sublimates due to the fact that the moisture in the air decreases and the temperature of the cold air in the container is lower than that of the frozen food. It moves to the cool air in the container, and this moisture moves and adheres to the low temperature portion of the container, and this is repeated, and it is not considered that the moisture in the food is reduced.

  In addition, the position of the outlet is not limited to the rear part of the upper surface of the container. For example, in order to increase the volume of the freezer without increasing the size of the refrigerator, the first freezer and the second freezer in the prior art It was considered to remove the insulation partition wall between them. However, if the heat insulating partition wall is removed, the cool air blown from the cold air outlet for the second freezing chamber also cools the bottom of the storage container of the first freezing chamber, and the temperature of the bottom of the storage container is changed to another part. The temperature becomes lower than that, and a temperature difference is generated, so that moisture is sublimated from the frozen food, and moisture transfer is likely to occur. These phenomena also occur in wrapped food purchased at a food department such as a supermarket. That is, the film for wrapping has a thickness different from that for home use, and moisture permeates. For this reason, the moisture sublimated inside the wrapping for a long time permeates the film and dries.

  Furthermore, when the wrapping is not complete, or when the wrapping is once performed and the wrapping is performed again, the degree of adhesion may be reduced and a gap may be formed. In this case, the moisture is sublimated and the moisture is easily moved. These are not taken into account in the known examples.

  Moreover, the refrigerator needs to maintain the cooling performance by melting frost attached to the surface of the cooler provided behind the freezer compartment with a heater. At the time of this defrosting operation, the air heated by the heater melts the frost adhering to the cooler, and the warm air of 20 ° C. to 30 ° C. after melting the frost reduces the temperature of the freezer compartment around −20 ° C. to −10 It may be raised to around ℃. At this time, the surface temperature of the frozen food in the storage container rises, and even at a temperature of −10 ° C., some food (for example, ice cream) melts. When the frozen food is melted, when the defrosting is finished and the cooling is resumed, the melted water is frozen and becomes frost, so that the moisture in the food is reduced.

  As described above, the defrosting operation causes the temperature distribution of the storage container to be non-uniform, thereby causing movement of moisture sublimated from the frozen food. For this reason, it is necessary to consider that the frozen food does not melt during the defrosting operation and that the temperature distribution of the storage container does not become uneven.

  The present invention solves the above problems, and provides a refrigerator having a freezing room that can be frozen in a moisturized (prevented drying) state and stored in a state where frozen foods are moistened and can be frozen in a short time. It is intended to do.

  The present invention solves the above problems.

  That is, a first freezing chamber, a second freezing chamber, an ice making chamber provided in the width direction of the second freezing chamber, an ice making container disposed in the ice making chamber, and the second freezing chamber In a refrigerator with a second freezer compartment disposed in a room and a cold air forced circulation fan that blows cool air into the ice making chamber and the second freezer compartment, A cover body that covers the entire surface of the upper surface opening, and a thermal resistor that enhances heat insulation properties are provided on the surface of the second freezer compartment container that comes into contact with the frozen food.

  The second freezer compartment is located above the first freezer compartment, and has a space through which cool air can flow between the second freezer compartment and the first freezer compartment. A room is attached to the width direction of the ice making room.

  In addition, the portion of the freezer compartment facing the freezer compartment that faces the freezer compartment is used as the bottom of the second freezer compartment container, and the bottom of the second freezer compartment container forms a double bottom that forms a heat insulating space.

  The second freezer compartment container has a convex portion or a corrugated concave / convex portion on the inner bottom surface of the second freezer compartment container so that the frozen food product and the bottom surface of the container do not contact each other.

  Further, the lid or the second freezer compartment container has a cold air discharge opening provided with an open / close shutter.

  In addition, it has an inclined surface for taking in cold air behind the lid that covers the entire upper surface of the second freezer compartment container when the door is closed, and has an opening on the front side of the inclined surface, for the second freezer compartment. Cold air is introduced into the second container for the freezer compartment from the opening by opening and closing a shutter provided on the container side.

  As described above, the present invention has a cover that covers the entire upper surface opening of the container for the second freezing chamber that forms a part of the freezing chamber, and the frozen food contact of the container for the second freezing chamber A heat resistor that enhances heat insulation properties on the surface to be heated, for example, a double structure that forms a heat insulation space, or a structure having an uneven portion, a heat insulation sheet, and the like in addition to the double structure. Thereby, the temperature difference of the temperature of frozen food and the surface temperature of the container inner surface can be made small. Thereby, it is possible to suppress the sublimation of moisture from the frozen food and to cause the movement of moisture, that is, moisturizing (preventing drying) and preventing the frozen food from drying.

  In addition to the above configuration, the second freezer compartment is located above the first freezer compartment, and the outlet of the cold air blown from the cold air forced circulation fan is located behind the second freezer compartment, It is possible to prevent the frozen food from being melted due to the temperature rise in the freezing chamber during the defrosting operation or to suppress the sublimation of moisture.

  Further, in addition to the above, those that do not have a heat insulating partition wall between the first freezer compartment and the second freezer compartment suppress the moisture sublimation from the frozen food and cause the movement of moisture, and the size of the refrigerator. The volume of the freezer can be increased without increasing the size.

  In addition to the double structure described above, the one having an uneven portion on the inner surface of the second freezer compartment can reduce the area where the second freezer compartment and the frozen food come into contact. Thereby, even if there is a temperature difference in the temperature of the part where the container for the second freezer compartment and the frozen food are in contact, the contact area is small, so that the heat effect due to heat conduction can be extremely reduced.

  Further, a space where cold air can flow is formed between the bottom surface of the food and the container except for a portion where the bottom surface of the food is partially in contact with the container. As a result, the bottom surface of the food can be prevented from being affected by the temperature change of the container, so that the water of the frozen food is prevented from sublimating and the frozen food can be stored in a moist state.

  Hereinafter, the details of the present invention will be described with reference to the embodiments shown in the drawings. FIG. 1 is a front view of a refrigerator provided with the present invention, FIG. 2 is a longitudinal sectional view of the refrigerator shown in FIG. FIG. 4 is a view showing the second freezer compartment door in FIG. 3 pulled out, FIG. 5 is an enlarged detail view of the main part of FIG. 3, and FIG. 6 is a top view of the second freezer compartment container shown in FIG. 7 is an enlarged explanatory view of the cross section of the shutter portion of FIG. 6, FIG. 8 is a front view of the shutter of FIG. 7, and FIG. 9 is a cross section taken along AA when the bottom surface shape of FIG. 10 is a cross-sectional view taken along the line AA when the convex portion is formed on the bottom surface of FIG. 5, FIG. 11 is a cross-sectional view taken along the line AA when the convex portion is formed on the bottom surface of FIG. It is a perspective view of a container for rooms.

  First, referring to FIG. 1 and FIG. 2, the overall structure of a refrigerator provided with the present invention will be described.

  1 is a refrigerator main body. The refrigerator main body 1 has a refrigerator compartment 2, a second freezer compartment 3, a first freezer compartment 4, and a vegetable compartment 5 from above. 6-9 are doors that close the front opening of the refrigerator compartment 2, etc., 6 is a refrigerator compartment door, 7 is a second freezer compartment door, 8 is a first freezer compartment door, and 9 is a vegetable compartment door. Show.

  The refrigerator compartment door 6 is a rotary door whose one side is pivotally attached by a hinge 10 or the like, and each of the doors 7, 8, 9 is constructed as a drawer type. Reference numeral 11 denotes an ice making room door that closes the front opening of the ice making room provided in parallel with the second freezing room door 3.

  Moreover, the 2nd freezer compartment 3, the 1st freezer compartment 4, and the vegetable compartment 5 are comprised by the containers 12, 13, and 14 which comprise each chamber. Thus, the containers 12, 13, 14 are attached to the doors 7, 8, 9 via the attachment frames (not shown) to the previous drawer doors 7, 8, 9. When pulled out, the containers 12, 13, and 14 can be pulled out together with the door.

  Further, since the second freezer compartment 3 is in communication with the first freezer compartment 4, the room temperature is set to −18 ° C. like the first freezer compartment 4.

  Reference numeral 15 denotes a cooler chamber formed at the back of the second freezer chamber 3 and the first freezer chamber 4, and in this cooler chamber 15, other cooler forced circulation of the cooler 17 constituting the refrigerating cycle together with the compressor 16 and the like. A damper 19 for controlling the amount of cool air sent to the fan 18, the refrigerator compartment 2 and the vegetable compartment 5, and a defrost heater 20 for melting frost attached to the cooler 17 are installed. A partition wall 21 partitions the freezer compartments 3 and 4 and the cooler chamber 15.

  And at the time of cooling, the cool air cooled by the cooler 17 is blown into the outer periphery of the container 12 forming the second freezing chamber 3 by the cool air forced circulation fan 18 or into the container 13, and the refrigerator compartment 2 and the vegetable compartment. 5, a necessary amount of cold air is blown through the damper 19.

  Although not shown in the drawings for collecting the cold air blown into each chamber, this is performed by a well-known method.

  By carrying out like this, the 2nd freezer compartment 3 and the 1st freezer compartment 4 are cooled to about -18 degreeC, the refrigerator compartment 2 is cooled to 1-3 degreeC, and the vegetable compartment 5 is cooled to 1-5 degreeC. If a large amount of frost adheres to the cooler 17 during the cooling operation, the cooling operation is stopped and the surface of the cooler 17 is defrosted by the defrost heater 20.

  At this time, the cold forced circulation fan 18 is stopped, but the warm air that heats the cooler 17 flows out to the second freezer compartment 3 and the first freezer compartment 4 side. In particular, since the second freezer compartment 3 is located above the first freezer compartment 4, the air after melting the frost during the defrosting operation is warm, so the air rises in the cooling compartment and the cold air outlet 21 a. From the first freezer compartment 4, and the temperature of the second freezer compartment 3 is increased much higher than that of the first freezer compartment 4.

  Accordingly, moisture moves between the frozen food stored in the second freezing chamber 3 and the first freezing chamber 4 and cold air (air) that has risen above the set temperature. In particular, a large amount of moisture moves in the second freezer compartment 3 where the temperature rises greatly.

  In view of this, it has a lid 25 that covers the entire upper surface opening of the second freezer compartment container 12 forming a part of the freezer compartment, and the frozen food in the second freezer compartment container 12 In addition to a thermal resistor that enhances heat insulation properties, for example, a double structure that forms a heat insulation space, or a double structure on the surface in contact with each other, a structure having an uneven portion, a heat insulation sheet 42, and the like is adopted. In addition to this, the second freezer compartment 3 is positioned above the first freezer compartment 4, and cold air forced circulation is provided behind the second freezer compartment container 12 disposed in the second freezer compartment 3. The cold air outlet 21a blown from the fan 18 was positioned. By doing in this way, it can prevent that frozen food melts by the temperature rise in the freezer compartment at the time of a defrost operation, or can suppress that a water | moisture content sublimates.

  Note that the movement of moisture occurs even during cooling. That is, during cooling, the temperature of the frozen food is the same as the temperature of the freezer room -18 ° C, whereas the temperature of the cold air blown into the freezer chamber is -30 ° C, so that the moisture on the frozen food side sublimates and the cold air side To move on.

  As described above, since the air after melting the frost during the defrosting operation for removing the frost adhering to the surface of the cooler is warm, the air rises in the cooling chamber and flows into the freezing chamber from the cold air outlet, and the temperature in the freezing chamber Will rise. In order to suppress the temperature rise in the freezer compartment and prevent the frozen food from melting or suppress the water from sublimating, the cold air blown from the cold air forced circulation fan is placed behind the second freezer compartment container. A double container that increases the heat insulation characteristics, that is, the thermal resistance, which covers the entire upper surface opening of the container for the second freezer compartment with a lid and places the second freezer compartment in contact with the frozen food. By providing the body, the frozen food is prevented from melting due to the temperature rise in the freezing chamber during the defrosting operation, or the sublimation of moisture due to uneven temperature distribution is suppressed.

  Next, the structure of the second freezing chamber 3 for preventing drying (moisturizing) of the frozen food to be stored will be described with reference to FIGS.

  In the figure, 1 is a refrigerator body, 3 is a second freezer compartment, 4 is a freezer compartment, 7 is a second freezer compartment door, 8 is a first freezer compartment door, 15 is a cooler compartment, and 17 is a cooler. , 18 is a cold air forced circulation fan, 19 is a damper, 20 is a defrost heater, and 21 is a partition wall.

  First, the second freezer compartment container 12 of the present invention is made of a double container.

  25 is a lid that closes the upper surface opening of the second freezer compartment container 12, and this lid 25 is attached to the refrigerator body 1 side and is taken in and out together with the drawer of the second freezer compartment container 12. However, it is usually fixed to the refrigerator body 1 side. That is, the lid body 25 is attached to the partition heat insulation wall 22 using an attachment tool (not shown) so as to form a cold air passage 23 between the lid body 25 and the partition heat insulation wall 22.

  A gap through which the cold air blown from the cold air forced circulation fan 18 passes is also secured around the outer periphery of the second freezer compartment 12 having the lid 25, particularly around the side surface of the container 12. The freezer compartment container 12 is cooled from the entire surface.

  22 a is a second partition heat insulating wall that partitions the first freezer compartment 4 and the vegetable compartment 5, and 24 is a beam-shaped forming a packing receiving surface for the second freezer compartment door 7 and the first freezer compartment door 8. It is a partition member.

  Since the beam-shaped partition member 24 is provided at the opening edge of the first freezer compartment 4 as shown in the figure, the second freezer compartment 3 (second freezer compartment container 12) and the first freezer compartment 4 are provided. The freezer compartment 4 constitutes substantially one room.

  Hereinafter, the structure of the second freezer compartment 12 and the attachment of the container 12 will be described with reference to FIGS.

  First, the second freezer compartment container 12 is a double container comprising an inner container 12a and an outer container 12b. There is a slight gap between the inner container 12a and the outer container 12b. This is provided for the purpose of uniformly cooling the inside of the container by forming an air layer between the inner container 12a and the outer container 12b. Further, this slight gap can be easily positioned between the two containers by providing the convex portion 12d and the like.

  Further, a lid 25 is provided at the upper surface opening of the second freezer compartment container 12 made by combining the two containers 12a and 12b.

  The lid body 25 has a flange 25a around it so as to overlap the flange 12c formed by the second freezer compartment container 12. The lid 25 does not obstruct the drawer of the second freezer compartment container 12 and is designed to take the above-described form when the container 12 is stored in the refrigerator body 1.

  The lid 25 is provided with an inclined surface 25b provided on the partition wall 21 for efficiently guiding the cold air blown from the cold air outlet 21a to the gap 23.

  Reference numeral 27 denotes a first opening provided in the lid body 25. 28 is a deodorizing device. The deodorizing device 28 is provided in the second opening 29 provided in the lid 25 and absorbs odorous components emitted from the frozen food stored in the second freezer compartment container 12.

  Reference numeral 30 denotes an opening for discharging cool air provided in the second freezer compartment container 12. This cold air discharge opening 30 is provided at a position close to the second freezer compartment door 7.

  That is, it is provided at a position away from the first opening 27 provided in the lid body 25. Further, the cold air enters the second freezer compartment 12 from the first opening 27 provided in the lid 25 when the cold air discharge opening 30 is opened.

  During normal cooling operation, the cool air blown from the cool air outlet 21 a is guided along the inclined surface of the lid 25 and flows through the gap 13. At this time, the lid 25 is provided with a first opening 27 and a second opening 29 (here, a deodorizing device is attached), but the air in the container 12 does not move. Therefore, it passes through here and hardly enters the second freezer compartment container 12, reaches the second freezer compartment door 7 side, and is formed between the second freezer compartment container 12 and the door 7. 26 to the lower first freezer compartment 4 side.

  Of course, the cold air coming out of the cold air outlet 21a flows also on the side surface of the second freezer compartment container 12, and the container 12 is cooled from the entire surface. Further, the bottom surface of the second freezer compartment container 12 is cooled by cold air that cools the first freezer compartment 4. Therefore, the bottom surface is a double bottom as shown in FIG. 5 to suppress heat transfer from the bottom surface. Reference numeral 31 denotes a shutter that opens and closes the cold air discharge opening 30.

  Next, the second container for the freezing chamber of this embodiment will be described with reference to FIGS. 5, 6, and 9 to 11.

  Since the second freezer compartment container 12 is positioned above the first freezer compartment 4 through the space, the bottom of the second freezer compartment container 12 is cooled from the other wall surface. If the temperature distribution is uneven in the second container for the freezer compartment, the movement of moisture described above easily occurs.

  Therefore, unlike the other wall surfaces, it is necessary to provide a thermal resistor that suppresses heat transfer on the bottom surface of the second freezer compartment container. The embodiment of FIG. 5 is an example in which a double container is used as an embodiment of this thermal resistor.

  The embodiment shown in FIGS. 5, 6, and 9 to 11 is an explanatory diagram relating to this thermal resistor. Hereinafter, this thermal resistor will be mainly described.

  In the embodiment shown in FIG. 9, the bottom of the inner container 12a forming the second freezer compartment 12 is a corrugated uneven portion. Of course, even if it is a corrugated uneven part, the wave height H1 dimension is 5-6 mm. The frozen food 40 is placed on the wave having a height of 5 to 6 mm as shown in FIG.

  By doing so, the frozen food 40 and the inner container 12a are in partial contact, and the heat that enters the frozen food 40 through the inner container 12a is greatly reduced due to the smaller contact area compared to the flat plate. Therefore, even if the bottom temperature is low, it balances with the heat entering the frozen food 40 from the other wall surface. In other words, the number of corrugated irregularities or the height H dimension or the like is changed in accordance with the amount of heat entering from another wall surface.

  Next, the embodiment shown in FIG. 10 is a rib-like projection for obtaining the same effect as FIG. 9 in which the bottom portion is a corrugated uneven portion to reduce the contact area with frozen food and to suppress the heat conduction from the container. A portion 41 is provided.

  Next, in the embodiment shown in FIG. 11, the sheet 42 is provided on the bottom surface while the rib-like convex portion 41 is provided on the bottom portion in FIG. This sheet 42 is made of resin, and its role is to suppress heat conduction from the container to the frozen food, similar to the corrugated uneven portion and the rib-shaped convex portion 41 described above.

  As described above, in the second freezer compartment container 12 shown in FIGS. 5, 6, and 9 to 11, heat is applied to the frozen food in the container 12 as follows.

  That is, the outer container 12b that is directly subjected to the cold air that has passed through the cooler 17 has a temperature in the vicinity of −30 ° C. that is substantially the same as the cold air that has passed through the cooler 17. The outer container 12b cooled to −30 ° C. cools the inner container 12a by heat conduction and radiant heat.

  At this time, since there is an air insulation layer between the outer container 12b and the inner container 12a, the entire inner container 12a has a temperature of about -20 to -25 ° C. The frozen food is cooled and stored at a set temperature by the inner container 12a. The space between the outer container 12b and the inner container 12a is changed to set the air heat insulating layer so as to correspond to the size of the heat load.

  On the other hand, the bottom of the second freezer compartment 12 is usually positioned in the path of the cool air that cools the first freezer compartment 4, so that the second freezer compartment 12 is compared to other wall surfaces. It will be colder. If frozen food is placed here, the frozen food in contact with the bottom surface becomes lower in temperature than the others due to heat conduction in the inner container 12a. The second freezer compartment shown in FIGS. 5, 6, and 9 to 11 prevents this.

  Next, the structure of the shutter will be described with reference to FIGS.

  A shutter 31 is attached to the cold air discharge opening 30. Details of the cold air discharge opening 30 will be described with reference to FIG. The cold air discharge opening 30 mentioned here includes a hole 32 provided in the inner container 12a and a hole 33 provided in the outer container 12b. Of course, the hole 32 and the hole 33 are provided to face each other as shown in the figure.

  The shutter 31 includes a shutter cover 34, a knob 35, an operating plate 36, an opening 37, and the like.

  That is, the opening 37 of the shutter cover 34 is attached so as to face the opening 32 provided in the inner container 12a, and the operation plate 36 having a knob 35 in the gap between the shutter cover 34 and the inner container 12a is shown in the figure. Is intervening. When the knob 35 is moved and the opening 37 provided in the operation plate 36 coincides with the previous cold air discharge opening 30, the air can flow, and when they do not coincide, the air does not flow.

  Therefore, when the inside of the second freezer compartment 12 is indirectly cooled, the shutter knob 35 is operated so that the opening 37 and the cold air discharge opening 30 do not coincide with each other so that air does not flow. When the quick freezing is to be performed, the opening 37 and the cold air discharge opening 30 are made to coincide with each other so that cold air is introduced into the second freezer compartment container 12 from the first opening 27.

  The operation of the knob 35 of the shutter 31 can be easily performed by pulling and opening the second freezer compartment door 7 to expose the knob 35 as follows. That is, the knob 35 is located at a position near the freezer compartment door 7 of the second freezer compartment container 12, and when the second freezer compartment door 7 is pulled open, the knob 35 is located above the knob 35 shown in FIG. From the state in which the lid 25 partially overlaps, only the second freezer compartment container 12 is pulled out leaving the lid 25 and the knob 35 is exposed.

  Next, the overall configuration of the second freezer compartment container 12 will be described with reference to FIG. In the figure, 12 is a second freezer compartment container, and 25 is a lid attached to a partition heat insulating wall that partitions the second freezer compartment and the refrigerator compartment. Reference numeral 25 b denotes an inclined surface that guides cold air to the first opening 27. 28 is a deodorizing device, and this deodorizing device is, for example, a filter that destroys various germs that pass by the magnetic force of ferrite and decomposes the odor. Reference numeral 30 is an opening for discharging cold air, and 31 is a shutter.

  The second freezer compartment container 12 is a double container in which an inner container 12a and an outer container 12b are combined. Reference numeral 38 denotes a handle, which is a handle for taking out the second freezer compartment container 12 from the refrigerator main body 1.

  The second freezer compartment container 12 is attached to the second freezer compartment door 7 shown in FIG. 1 and has an internal volume of about 25 to 35L. As described above, this second freezer compartment container 12 constitutes a part of the freezer compartment and has an internal volume of about 1/8 to 1/7 of the freezer compartment when viewed from the whole freezer compartment. The inside of the second freezer compartment 12 is cooled without increasing the refrigerating capacity.

  The second freezer compartment container 12 stores raw food, vegetables, and fruit, operates the knob 35 of the shutter 31, closes the cold air discharge opening 30, and then the second freezer compartment door. When 7 is closed, the upper surface of the second freezer compartment container 12 is covered with the lid 25, and the inside of the second freezer compartment container 12 is almost sealed. In this state, the lid 25 is provided with a first opening 27 near the cold air outlet 21, but the second freezer compartment container 12 has a cold air discharge opening 30 closed by a shutter 31. The cold air movement in the second freezer compartment 12 does not occur, and there is substantially no inflow of cold air from the first opening 27 into the second freezer compartment 12.

  As a result, the frozen food in the second freezer compartment container 12 is affected by cold air or warm air to suppress moisture sublimation and dew condensation (frosting), so that the taste of the frozen food is not deteriorated.

  That is, the second freezer compartment container 12 is indirectly cooled by the cold air flowing on the surface of the lid 25 and the outer periphery of the container 12, so that the frozen food is affected by the cold air or the warm air. No longer receive.

  On the other hand, when the frozen food is stored in the second freezer compartment 12 and the knob 35 of the shutter 31 is operated to open the cold discharge opening 30 and then the second freezer compartment door 7 is closed, Since the second freezer compartment container 12 has an outlet for the cold air, the cold air from the first opening 27 circulates in the second freezer compartment container 12, so that the second freezer compartment container 12 suddenly flows. Can be used as a freezer room.

  The sublimation of moisture from the frozen food according to the above examples and the movement of moisture were suppressed, and the frozen food was prevented from drying. Compared with the conventional test in the 30-day test, the humidity was 40% for the conventional structure and about 65% for the example in the humidity in the freezer compartment. As a result, in the 30-day test, the moisture content was about 3.5 times that of 40% of the conventional structure. In addition, the deterioration of the surface of frozen food is also suppressed, and compared to the deterioration of the food surface of the conventional structure, there is no deterioration of the food surface compared to the conventional deterioration of the skin of grains and fruits, and the food inside does not touch the air, Vitamin C (ascorbic acid) was prevented from being oxidized, and the amount of vitamin C (ascorbic acid) retained was about twice.

  The effects of the above embodiment are summarized as follows.

  By having a lid that covers the entire upper surface opening of the second freezer compartment forming a part of the freezer compartment, it is indirectly cooled from the outside as a sealed container, and for the second freezer compartment The temperature of the frozen food and the frozen food are brought into contact with the surface of the container that comes into contact with the frozen food by having a heat resistor that enhances the heat insulation characteristics, for example, a double structure that forms a heat insulation space, an uneven portion, a heat insulating sheet, etc. The temperature difference from the surface temperature of the inner surface of the container can be extremely small.

  Thereby, it is possible to prevent moisture from sublimating from the frozen food and causing moisture to move, and to prevent the frozen food from drying. In addition, since the heat insulating partition wall is not provided between the first freezer compartment and the second freezer compartment, the volume of the freezer compartment can be increased without increasing the size of the refrigerator.

  In addition, a blowout port for the cold air blown from the cold forced circulation fan is located behind the second freezer compartment container, and the entire upper surface opening of the second freezer compartment container is covered with a lid, so that the second freezer By providing a thermal resistor that enhances the heat insulation characteristics on the surface of the room container that comes into contact with the frozen food, it is prevented from melting due to a rise in temperature in the freezer compartment during defrosting operation or suppressing moisture sublimation. I can do it.

  In addition to the double structure described above, the one having an uneven portion on the inner surface of the second freezer compartment can reduce the area where the second freezer compartment and the frozen food come into contact. Thereby, even if there is a temperature difference in the temperature of the part where the container for the second freezer compartment and the frozen food are in contact, the contact area is small, so that the heat effect due to heat conduction can be extremely reduced. Further, a space where cold air can flow is formed between the bottom surface of the food and the container except for a portion where the bottom surface of the food is partially in contact with the container. Accordingly, the bottom surface of the food can be suppressed from being affected by the temperature change of the container, so that the moisture of the frozen food is prevented from sublimating, and the frozen food can be stored in a moist state.

  In addition, since a part of the freezer compartment is a container for the second freezer compartment and is cooled indirectly from the outside of this container, compared to the case where the whole freezer compartment is attempted to be cooled indirectly. The frozen food can be stored in a moisturized state (prevented from drying) without wrapping with a resin film or the like without increasing the freezing capacity so much by an inverter or the like.

  Moreover, by providing a shutter on the container or lid for the second freezer compartment so that cold air can be introduced and discharged from the opening, it is possible to provide a freezer compartment capable of freezing unfrozen food in a short time. . In addition, if a space where cold air can flow is formed between the bottom of the food and the container, cold air can flow around the entire circumference of the frozen food. It becomes possible to freeze with.

  Even a refrigerator whose refrigeration capacity cannot be controlled can be provided with a room in which frozen foods requiring moisture retention can be stored.

  In addition, since the cool air is introduced into the second freezer compartment by opening and closing the shutter, the cool air blown out from the cool air outlet is efficiently guided by the inclined surface and passed through the second freezer compartment. Therefore, it is possible to provide a refrigerator that can be cooled indirectly or directly, so that the second freezer compartment can be used as a moisturizing chamber or a quick freezer. Moreover, since it can switch to a moisture retention chamber as it is, without taking out after quick-frozen, the refrigerator with few temperature changes in a frozen food and the container for 2nd freezer compartments can be provided.

It is a front view of the refrigerator provided with this invention. It is a longitudinal cross-sectional view of the refrigerator shown in FIG. FIG. 3 is an enlarged view of a main part of FIG. 2. It is a figure which shows the place which pulled out the 2nd freezer compartment door in FIG. FIG. 4 is an enlarged detail view of a main part of FIG. 3. It is the figure which looked at the container for 2nd freezer compartment shown in FIG. 5 from the upper surface. FIG. 7 is an enlarged explanatory view of a shutter unit in FIG. 6. It is a front view of the shutter of FIG. It is AA sectional drawing which formed the bottom face shape of FIG. 5 in the waveform unevenness | corrugation. It is AA sectional drawing at the time of forming a convex part in the bottom face of FIG. It is AA sectional drawing at the time of forming a convex part in the bottom face of FIG. It is a perspective view of the container for 2nd freezer compartment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Refrigerator main body, 2 ... Cold room, 3 ... 2nd freezer room, 4 ... 1st freezer room, 5 ... Vegetable room, 6 ... Cold room door, 7 ... 2nd freezer room door, 8 ... 1st Freezing room door, 9 ... vegetable room door, 10 ... hinge, 11 ... ice making room door, 12 ... second freezing room container, 12a ... inner container, 12b ... outer container, 12c ... flange, 12d ... convex part, 13 DESCRIPTION OF SYMBOLS ... Container for 1st freezer compartment, 14 ... Container for vegetable compartment, 15 ... Cooler room, 16 ... Compressor, 17 ... Cooler, 18 ... Cool air forced circulation fan, 19 ... Damper, 20 ... Defrost heater, 21 ... Partition wall, 21a ... cold air outlet, 22 ... partition heat insulation wall, 22a ... second partition heat insulation wall, 24 ... beam-shaped partition member, 25 ... lid, 25a ... flange, 25b ... inclined surface, 26 ... gap [ Between the door 7 and the container 12], 27 ... first opening, 28 ... deodorizing device, 29 ... second opening, 30 ... for cold air discharge Mouth, 31 ... Shutter, 32 ... Hole (inner container), 33 ... Hole (outer container), 34 ... Shutter cover, 35 ... Pick, 36 ... Working plate, 37, 39 ... Opening, 38 ... Handle, 40 ... Frozen food , 41 ... rib-like convex part, 42 ... sheet.

Claims (9)

  A first freezing chamber, a second freezing chamber, an ice making chamber disposed in the second freezing chamber, an ice making container disposed in the ice making chamber, and the second freezing chamber; In the refrigerator-freezer comprising the second freezer compartment container and a cold air forced circulation fan for blowing cool air into the ice making chamber and the second freezer compartment, the entire upper surface opening of the second freezer compartment container And a heat resistor that enhances heat insulation properties on the surface of the second freezer compartment container that comes into contact with the frozen food.   A second freezer compartment is located above the first freezer compartment, and a space between the second freezer compartment and the first freezer compartment is provided for the flow of cold air, the second freezer compartment 2. The refrigerator-freezer according to claim 1, wherein the refrigerator is provided at a position in the width direction of the ice making chamber.   The second freezer compartment is located above the first freezer compartment, and a cool air blowout port blown from the cold forced circulation fan is provided behind the second freezer compartment container disposed in the second freezer compartment. The refrigerator-freezer according to claim 1, wherein the refrigerator-freezer is located.   2. The refrigerator-freezer according to claim 1, wherein the surface of the container for the second freezer compartment that comes into contact with the frozen food is a bottom surface, and the thermal resistor that enhances the heat insulating property is a double bottom that forms a heat insulating space on the bottom surface. .   The refrigerator-freezer according to claim 2, further comprising a convex portion on an inner bottom surface of the second freezer compartment container.   4. The refrigerator-freezer according to claim 3, wherein the convex portion on the inner bottom surface of the container for the second freezer compartment is formed by a corrugated concave-convex portion.   5. The refrigerator-freezer according to claim 4, wherein the corrugated irregularities are also formed on the outer bottom surface of the second freezer compartment container.   2. The refrigerator-freezer according to claim 1, wherein the lid or the second freezer compartment container has a cold air discharge opening provided with an open / close shutter. It has an inclined surface for taking in cold air behind the lid that covers the entire upper surface of the second freezer compartment container when the door is closed, and has an opening on the front side of the inclined surface, and the second freezer compartment container side The refrigerator-freezer according to claim 1, wherein cold air is introduced into the second container for the freezer compartment from the opening by opening and closing the shutter.

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